3000 men 39-59 in california were exmined for signs of CHD and thei personalities were assessed by interview.

It included questions about how they responded to everyday pressures e.g. asked how they would cope for having to wait in a long queue

Trying to elicit type A behaviour... interviewer may speak slowly and hesitantly for Type A to interrupt

After 81/2 years, twice as many Type A had a heart attack, compared to 6% of Type B.

Type A also had higher bllod pressure and cholestrol

EVALUATION

Research support for the Type A/CHD link

follow-up study of Western Collaborative Group participants in 1982-3, 22 years after the start

214 of men had died from CHD

Study confirmed the importance of the CHD risk factors but found little evidence of a relationship between Type A behaviours and mortality, challening the earlier conclusion that Type A behaviour was a significant risk factor for CHD mortality.